81665610 (number)

81665610 is an even 8-digits composite number following 81665609 and preceding 81665611. In scientific notation, it is written as 8.1665610 × 10^7. The sum of its digits is 33. It has a total of 7 prime factors and 128 positive divisors. There are 18683136 positive integers (up to 81665610) that are relatively prime to 81665610.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-five thousand six hundred ten

Notation

Scientific notation 8.1665610 × 10^7
Engineering notation 8.1665610 × 10^6

Prime Factorization of 81665610

Prime Factorization 2 × 3 × 5 × 19 × 13 × 107 × 103

Composite number
ω Distinct Factors 7
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 81665610
Product of the distinct prime numbers

The prime factorization of 81665610 is 2 × 3 × 5 × 19 × 13 × 107 × 103. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81665610)

Multiplication

n×y
n×2 163331220
n×3 244996830
n×4 326662440
n×5 408328050

Division

n÷y
n÷2 40832805
n÷3 27221870
n÷3 20416402.5
n÷5 16333122

Exponentiation

ny
n2 6669271856672100
n3 5.4465015443096E+23
n4 4.4479187098199E+31
n5 3.6324199466785E+39

Nth Root

y√n
2√n 9036.9026773558
3√n 433.85679476073
4√n 95.062625028745
5√n 38.23031197673

Divisors of 81665610

128 divisors

τ Total Divisors 128
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81665609
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0078125
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 128
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81665610 can be divided by 128 positive divisors. The sum of these divisors (counting 81665610) is 1, the average is 0.0078125.

Base conversion 81665610

Base System Value
2 Binary 100110111100001111001001010
3 Ternary 12200200001011020
4 Quaternary 10313201321022
5 Quinary 131401244420
6 Senary 12034213310
8 Octal 467417112
10 Decimal 81665610
12 Duodecimal 23424236
16 Hexadecimal 4de1e4a
20 Vigesimal 15a840a
36 Base36 1cmdl6

Cryptographic Hash Functions

md5 2af874d8eec37826c5e26cfe910c3f7b
sha1 a085b601092fd0bbedeb8911ec754cc2091263b6
sha256 7db7e7fb0a2c653deebb863d1aa599e53f1797dd038520806a1e2dbfba25713b
sha512 024810707a9fa591ccf31a971f78d9e3b3ad80a35747b5b51d47a857c99b0115cfaef66c2dc920d1f5002e22a371b7f2f7d81e8b09f4d46b7cf432b4d03117af
ripemd-160 fe1f0533410db84ec2f516cb0c901f003e9ff1b6

81665610 as geometric shapes

Circle

Radius = n
Diameter 163331220
Circumference 513120160.85386
Area 2.0952135469714E+16

Sphere

Radius = n
Volume 2.2814252319158E+24
Surface area 8.3808541878857E+16
Circumference 513120160.85386

Square

Length = n
Perimeter 326662440
Area 6669271856672100
Diagonal 115492613.24147

Cube

Length = n
Surface area 40015631140032600
Volume 5.4465015443096E+23
Space diagonal 141448985.7511

Equilateral Triangle

Length = n
Perimeter 244996830
Area 2.8878794263113E+15
Altitude 70724492.875552

Triangular Pyramid

Length = n
Surface area 2.8878794263113E+15
Volume 6.4187636262072E+22
Height 38497537.747157